IBM Draco 9GB UltraWide 68pin Scsi hard drive. Model# 39130 Vendor IBM Range Draco Apricot Part Number PT16161731 Form Factor 3.5", 1" high Weight 630g Formatted Capacity (x106 bytes) 9130MB Formatted Capacity (x220 bytes) 8707.05 Number of Platters 5 Number of Heads 10 Actuator Voice Coil Positioning System Embedded Average Access Time Read < 7.5ms Write Single Track Seek Time Read Write Nominal Rotational Speed 7200RPM Average Rotational Latency 4.17ms Maximum Sector Transfer Rate 21.375MB/s Typical Data Sector Transfer Rate Maximum 13.8MB/s Minimum 8.6MB/s Numbers of Sectors / Track Maximum Minimum Type of Head Utilised MR Read Channel Implementation PRML Encoding Method RLL (16,17) Standard 68 pin 'P' Connector Yes Wide '16-bit' SCSI Support Yes UltraSCSI (Double SCSI) Support Yes Maximum SCSI Burst Transfer Rate 40MB/s Sync. Cache Size Total 512KB Read Data Segmentation Type Continous Read Prefetch Yes Write Cache Yes